Abstract: An imaging system for producing color images may include a CT scanner having a scanner, a scan memory, a disk memory, a reconstructor and a controller. The CT scanner performs successive scans of a portion of the scanning subject, which may be a living body, and generates scan data for each X, Y portion of each scan. The CT scanner is connected to a controller which may have a microprocessor and one or more memories. The controller generates color image data which includes a color code specifying a particular color for each X, Y portion of the image to be displayed. The color codes are assigned to the X, Y portions of the scans based upon the scan number differences between a first scan of the living body portion and a later scan of the living body portion. A color display is connected to the controller for displaying the colorized images generated.